Month and date not in Sync On Annual Calendar . Patek 5726

[sandeep11]

Hello Family,

On a 5726 the month is flipping around the 15th of each month and not on 31st. Does it require a service ? Watch is running perfectly otherwise. Production year is 2017.

questions -

1. Should i send it for service anyways since it is 7 years old?
2. Correctors may be off as per the Service center in Singapore, which is only 70 bucks - Should i just get that changed ?
3. Leave it as is.

I plan on keeping the watch for life. please suggest accordingly.

Thanks,